Generator or mixing valve.



No. 714,982. Patented Dec. l2, |902. F. B. WIDMAYER, M. E. TOEPEL A. POTDEVIN.

GENERATOR 0R MIXING VALVE.

(Application led May 9, 1901.)

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(un meel.)

2.ofowm` iTED STATES PATENT OFFICE.

FRANK B. VVIDMAYER, MICHAEL E. TOEPEL, AND ADOLPH POTDEVIN, OF NEV YORK, N. Y.

G EN ERATOR OR MIXING VALVE.

SPECIFICATION forming partl of Letters Patent No. 714,982, dated December 2, 1902.

Application filed May 9, 1901l Serial No. 59,379. (No model.)

To all whom, t may concern: in the opcnin g movement of the valve, so that Beitknown that We,FRANK B. WIDMAYER, the main valve may move freely to open the MICHAEL E. TOEPEL,and ADOLPH POTDEVIN, main ad mission-ports, although the oil-valve citizens of the United States, and residents of may in the course of such reverse movement 5 New York city, in the county of New York be brought to rest. In carrying out this feaand State of New York, haveinvented certain ture of our invention we use for the main adnew and useful Improvements in Generator mission-valve a type of valve that may be or Mixing Valves, of which the following is a briefly described as being of the slide-valve specification. type. 6o lo Ourinvention relates to the construction of Another feature of our invention consists a generator or mixing valve suitable for use inthe combination,with the oilvalve actuated for automobile, marine, or other engines of by the main admissionvalve,ofaspringtendthe internal-combustion type and designed to ing constantly to unseat said valve, thereby furnish to the cylinder of the engine a quaninsuringthe opening of said oil-valve when I5 tity of combustible mixture formed at each the main admission-valve is opened by the stroke of the valve by commingling a fixed suction or vacuum produced by the piston of quantity of gasolene or other oil with air or the engine. other gas. Another part of our invention consists in Our invention relates more particularly to the combination,with the oil-valve and arnain 7o zo that type of generator or mixing valve whereadmission-valve positively coupled thereto in 'in the gasolene or other oil is supplied at each the closing movement, but capable of movestroke of the main admission-valve through a ment independently thereof in the opening supplementary valve hereinafter termed the movement of the valve, of means for regulatoil-valve, which opens a passage leading ing the throw or travel of the oil-valve during 25 from the oil or gasolene supply to a chamber its opening stroke to adjust the amount of oil into which the air is drawn by suction or vacusupplied at each charge. um produced by the piston of the motor. Our invention consists also in means, as The object of our invention is to furnish a hereinafter described, for securing a ner simple, reliable, and compact mixing-valve regulation in the quality of the mixture and 8o 3o adapted to supply a xed or invariable profor bringing about a more thorough mixture portion of air and oil in the charge at any of the oil and the air.

speed of the engine to which the valve is at- In the accompanying drawings we show tached. one of the forms of generator or mixing valve A further object of the invention is to elmiembodying our invention.

35 nate the danger of flooding from a too-free Figurelisaverticalcentralsection through supply of oil and also to permit the proporthe device. Fig. 2 is a horizontal section on tion of air and oil to be easily regulated and the line l l of Fig. l. Fig. 3 is a horizontal to secure other advantages which will be more section on the line 2 2 of Fig. l. Fig. 4 illusapparent from the subjoined description. trates a modification in the form of valve 9o 4o Our invention consistsin the combinations casing or body and the dispositions of the of devices and details of construction more means for adjusting the throw of the oil-valve. particularly hereinafter described and then 1 is the body or casing of the apparatus specified in the claims. furnished at one end with a nipple 2, adapted One of the features of onrinvention resides for coupling to a pipe leading from the gaso- 45 in the combination ofa main admission-valve lene or oil supply and having a central outand an oil-valve positively coupled or conlet or passage 3, through which the oil is denected with one another in the closing movelivered to an oriticecontrolled by a suitable ment of the main valve, so that the oil-valve valve 4E, which constitutes the oil valve or shall be seated by the positive action of the check and which may be of any desired form, roo

5o main valve in the closing movement, but capabut is preferably made as a needle-Valve, and

ble of movemeutindependentlyof one another also by preference is provided with a spreading or flaring body or surface below the outlet of pipe 3 to more thoroughly spread and distribute the oil admitted into the chamber 5. At the opposite end of the valve chamber or casing is the outlet 6, through which the charge is delivered to the pipe leading to the cylinder of the engine.

The casingl may be of cylindrical form,and the end carrying the nipple 2 may be reduced in diameter, as shown, at the portion where the chamber 5 is located. The outlet 6 may be formed in a base-piece 7, which may be coupled to the main body 1 by a screw-joint, as shown.

9 indicates a spider or diaphragm, which may be clamped between the piece 7 and the shoulder on the inside of the cylindrical portion 1 of the valve-casing, as shown.

The spider or frame 9 may serve to support the parts of the main admission-valve, as will be presently described.

At 10 are shown a number of air-openings which admit air to the chamber 5, whence the air is drawn, commingled with the oil admitted by valve 4, to the mixing-chamber 11. From the latter the mixture passes through openings 12 to a supplemental mixing-chamber 13, and from the latter it passes through the spider or diaphragm 9 to the chamber 14, whence it is delivered through the outlet 6 to the engine-cylinder- The openings 12 are formed in the offset or shoulder between the main casing l and the reduced cylindrical portion in which the chamber ,5 is located, and the imperforate portions in said shoulder or offset partly obstruct the flow of the mixture, so as to aid in securing a more thorough commingling of the air and oil vapors. This action may be further enhanced by the obstructive effect of the spider or diaphragm 9.

The passage between the chamber 5 and the chamber 11 is controlled by the main admission-valve, which is opened by the suction of the engine-piston. This main admission-valve (indicated at 15) is constructed as a slidevalve, as shown, and when in the position indicated in Fig. 1 closes ports or openings formed in the Wall of the casing or cylinder in which it slides, said ports or openings constituting those through which the commingled oil and air are allowed to pass into the mixing-chamber 11.

The stem 16 of the valve 15 is guided, as shown, upon the stem rising from the spider or frame 9 or in any other suitable way. A spring 18, bearing at one end against the spider 9 and at the other against the lower side of the valve 15, tends to close and keep the same closed.

The valve 15 operates upon valve 4 through a positive connection of any desired shape or forrn'adapted to cause the valve 4 to be seated by a positive action, but to permit the valve l5 to move independently of valve 4 on the reverse movement, by which the valve 15 opens its ports. This positive connection may be afforded by a shoulder on the valve 4, seated Vupon the top of the piston,v as shown, so that said valve will be closed and held closed by the positive action of the valve 15, actuated by its spring. This closing move ment will obviously be always effectual, be cause the movement of the valve 15 is unobstructed by its own valve-seat, as Would be the case if it were the ordinary form of con= ical or similar valve, such as is frequently employed in generator or mixing valves. l/Vhen the valve 15 is drawn down by the exhaust or relief of pressure-WithinI the chamber 13, the valve 4 is permitted to open the oil-supply simultaneously with the opening of the ports controlled by the main ad mission-valve 15. In the opening movement of the valve 4 it is obviously free from positive connection with valve 15, and said valve 15 may move to any extent irrespective of the extent of movement of valve 4, which drops under the effect of gravity assisted, preferably, by a suitable spring.

The valve 4 has a stem 19, as shown, which passes down within the stem of valve 15 and is adapted on the downstroke to engage with a stop or check rod 20, adjustably mounted in the frame or s ider 9. The rod 20 may be a screw adjusta l"le, as shown, and provided with a check-nut 2l for holding it in adjusted position. As is obvious, by adjusting the rod 20 the travel of the valve 4 and the extent of opening of the orifice through which the oil iows into the chamber 5 may be regulated. If the rod 2O is adjusted upwardly, the valve 4 is permitted to follow the valve 15 to a less distance,and hence a less quantity of oil will be injected into the chamber 5 at each stroke of valve 15. The latter obviously Will open to its full extent, no matterwhat the adjustment of the rod 20, and hence the action of the regulating-valve may be changed or adjusted without changing the tension of the spring for the main regulator-valve or disturbing the action of said valve in any manner. When the valve 15 closes, the valve 4 is seated positively and in fact acts as a stop to limit the upward throw of the valve 15, inclosing the admission-ports.

For the purpose of carrying the valve 4 down `by a positive action and insuring the prompt and full opening of the same when the piston-valve opens we prefer to provide a supplemental spring 22, bearing at one end against the piston-valve 15 and at the other against acollar 23, secured to the valvestem 19.

The spring 22 exerts a constant pressure or effect, tending to unseat the valve 4; but inasmuch as it is a weaker spring than 18 this effect is overcome by the superior action of the spring 1S, which holds the Valve 4 seated until the suction of the engine-piston opens valve 15. f

The mixing-chamber 11 may be formed by a supplemental cap or shell 24, concentric with the main admission-valve and having a IOO IIO

IZO

skirt or ange which extends down over the cylindrical portion l of the Valve-casing and is adapted to slide freely thereon, if desired.

The shell 24 may form a part of or be attached to a collar or ring 25, which is adjustable by means of a screw-thread attachment upon the outside of the chamber 5, so that` the skirt or flange may be moved up or down upon the body l, and thereby regulate the size of supplemental air-openings 26, through which an additional air-supply may be admitted to the chamber ll additional to that introduced with the oil from chamber 5 through the ports controlled by the slide- Valve 15. By using this additional air-supply and adjusting it by any suitable devicesuch, for instance,as that shown-We are able to get a much finer regulation of the quality of the mixture. In the modification illustrated in Fig. 4c the outlet 6 is formed in the side of the base-piece 7, and the adjustingstop 20 is mounted in the base 7 and is furnished on the outside with a thumb piece or disk 30, in conjunction with which a suitable index 3l may be employed to show or indicate the adjustment of the oil-valve. The valvestem 19 in this case extends down through the spider or frame 9, as indicated, so as to engage the end of' the adjustable stop 20.

What we claim as our invention is- I. In a generator or mixing valve, the combination of an oil-valve and a main admission-valve positively engaged or connected therewith in its closing movement but capable of movement independently thereof in its reverse or opening movement.

2. In a generator or mixing valve, the combination with a main admission-valve, of an oil-valve positively engaged or actuated thereby in the closing movement but free from positive connection therewith during the opposite movement, and a stop for limiting the throw of the oil-valve during the reverse or opening movement as and for the purpose described.

3. The combination with the main admission-valve and an oil-valve actuated thereby, of a spring tending to open said oil-valve.

4. In a generator or mixing valve, the combination substantially as described, of a piston-valve controlling the admission of airand oil to a mixing-chamber, an oil-valve having a valve-seat adapted to stop the throw thereof in closing off the supply of oil said oilvalve being positively actuated or engaged by said piston valve during closing movemeut but free from positive connection therewith during the reverse movement, and an adjustable rigid stop or abutment adapted to be engaged by the oil-valve to positivelylimit the extent of opening movement thereof.

5. In a generator or mixing valve, the combination of a slide-valve, an oil-valve positively engaged by the slide-valve during its closing movement, a spring operating on the slide-valve to close the same, a stem for the oil-valve guided within the slide-valve and a spring compressed between the slidevalve and the stem of the oil-valve.

6. The combination in a mixing or generator valve of a main admission-valve, an oilvalve connected therewith, a mixing-cham-` ber in which the oil and air commingled are admitted through ports of the main valve, and a supplemental mixing-chamber connected with the formerthrough one or more openings of restricted size adapted to obstruct the flow and insure a thorough mixture of the oil and air.

7. In a generator or mixing valve, the combination substantially as described of a piston or slide valve constituting the main admission-valve, a spring tending to close the same, an oil-valve positively engaged by said piston-valve during closing movement only when the piston-valve returns under the action of its spring to position to close the inlet to the mixing-chamber, said piston-valve being adapted to moveindependently of the oilvalve during opening movement, and an adjustable stop acting on the oil-valve during its reverse movement only and arranged as described to limit the extent of movement of said oil-valve When it is free and permitted to open by the piston-valve.

8. In a generator or mixing valve, the combination with the valve-body, of a supplemental cap or shell adjustably mounted thereon, a mixing-chamber formed between said cap or shell and the valve-body, a main admissionvalve by which the commingled air and oil are admitted to said mixing-chamber, and airopenings in said shell through which additional air-supply may be admitted directly to the mixing-chamber in amount graduated by the adjustment of said shell.

9. In a generator or mixing valve, the combination of a spider or frame secured within the valve-body between the mixer-valve and outlet, a mixer-valve having a stem guided thereon, a spring bearing at one end against said spider or frame and at the other against the valve so as to keep the same closed, an oil-valve having a shoulder engaged by the mixer-valve and provided with a stem extending down Within the stem of the mixervalve, and a spring within the stem of the mixer-valve tending to unseat the oil-valve.

l0. In agenerator or mixing valve, the combination substantially as described 4 of the main admission-valve, a spider or frame having a hollow stem upon which the hollow valve-rod is guided, an oil-valve having a valve-rod guided in said frame and in the main admission-valve, a spring tending to open said oil-valve and contained Within the said guiding-stem, and an adjustable stop adapted to be engaged by the stem of the oilvalve during its opening movement.

l1. In a generator or mixing valve, a valvecasing l having an extension of reduced diameter constituting a cylinder forthe pistonvalve and provided with ports or openings governed by said valve, and an exterior cap IOO IIO

or shell adjustable en said extension and having a skirt or ange overlapping upon the body of the valve and provided With air-openings, said cap or shell being adapted to form a mixing-chamber.

12. In agenerator or mixing valve, the coinbination of the body or casing l having an eX- tension of reduced size provided with openings 10 and constituting the cylinder for a piston-valve, a cap or shell adjustable on said extension and having a skirt or flange overlapping upon the body l, valve ports or openings in the Walls of said extension adapted to form admission-ports through Which the air and oil may pass to a mixing-chamber formed r g.

by said cap or shell and openings 12 in the body or easing l through which the mixture may pass from the mixing-chamber on its Way to the outlet.

Signed at New York city, in the county of 2o New York and State of New York, this 4th day of May, A. D. 1901.

FRANK B. WIDMAYER. MICH. E. TOEPEL. ADOLPH POTDEVIN. Witnesses:

D. H. DECKER, E. L. LAWLER. 

